I met my beau of 2 years on Match. It worked well for us, but I had to get through a few toads before finding my prince.
My suggestion is to always follow your intuition with someone. I personally did not post a picture and I was immediately able to weed out those with good intentions and not so good.
If you want a website that is extremely thorough and don't mind paying a bit for it, eHarmony is another good site too.